यदि $ का अर्थ है ‘विभाजित’; @ का अर्थ है ‘गुणित’; # का अर्थ है ‘घटाया गया’; तो 10#5@1$5 का मान क्या है ?
Read this question in English
If $ means ‘divided by’; @ means ‘multiplied by’; # means ‘minus’, then the value of 10#5@1$5 is
(a) 0 · (b) 1 · (c) 2 · (d) 9
उत्तर और व्याख्या · explanation in English
Answer: (d) 9
Decoded, the expression is 10 − 5 × 1 ÷ 5. Multiplication and division come before subtraction, so 5 × 1 ÷ 5 = 1 and the value is 10 − 1 = 9.
- 10#5@1$5 = 10 − 5 × 1 ÷ 5.
- 5 × 1 = 5, then 5 ÷ 5 = 1.
- 10 − 1 = 9.
- Check: working strictly left to right would give (10 − 5) × 1 ÷ 5 = 1, which ignores BODMAS.
Remember · After decoding the symbols, apply BODMAS strictly: division and multiplication before subtraction.
Question and answer: UPSC's official GS Paper II (2019, Series A) — paper ↗ · answer key ↗. Explanation: Minimalist IAS, checked 30 Sept 2026 (how we verify). ·